A device for separating laminated parts of retired photovoltaic modules

Abstract

The present invention discloses a retired photovoltaic module laminate separation device, which relates to the photovoltaic module recycling technology field. The retired photovoltaic module laminate separation device includes a disassembly table, and also includes: hot steel needles, which are arranged in a linear matrix on one side or above both sides of the disassembly table; the disassembly table is provided with a Y-axis moving component for driving the hot steel needle to enter between the glass layer and the EVA layer in the needle axis direction; the disassembly table is provided with an X-axis moving component for driving the hot steel needle to move in a direction perpendicular to the insertion direction; wherein: the hot steel needle enters between the glass layer and the EVA layer and can pyrolyze the EVA layer by internal heating; the retired photovoltaic module laminate separation device can use multiple hot steel needles to insert into the laminate, and pyrolyze the EVA layer by internal heating to accelerate the stripping of the glass, and on the other hand, it can also improve the cutting efficiency by synchronous cutting of multiple hot steel needles, thereby accelerating the stripping process of the entire glass layer.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic component separation, and in particular to a retired photovoltaic component laminate separation device. Background Art

[0002] The photovoltaic industry has developed rapidly as a clean and renewable energy source. Photovoltaic modules are mainly composed of glass plates, EVA adhesive layers, cells, backplanes, junction boxes and frames, etc. More than 90% of the materials can be recycled and reused, with considerable recycling value and high economic profits. Therefore, recycling photovoltaic module materials after reaching the end of their life can not only alleviate the shortage of raw materials for photovoltaic devices to a certain extent, but also avoid pollution to the environment.

[0003] At present, component recycling adopts the physical separation method. During the disassembly, the aluminum frame, glass and junction box need to be removed, and then the frameless components are crushed. Then, through a variety of complex separation methods, the broken glass, silicon powder and precious metals are finally obtained.

[0004] In particular, a photovoltaic module recycling system and recycling method based on laser separation of laminates proposed in the patent with publication number CN117798524A includes a loading conveyor line, a laser activation unit and a unloading conveyor line connected end to end in sequence, the laser activation unit includes a conveyor belt, a darkroom is arranged above the conveyor belt, a laser generator group with a downward optical path is connected to the top of the darkroom, a manipulator is arranged on one side of the unloading conveyor line, and a suction cup assembly located above the unloading conveyor line is connected to the manipulator; the EVA adhesive layer is irradiated and activated by laser, so that the three-dimensional network structure inside the EVA adhesive layer, which is the packaging material of the frameless photovoltaic module, is changed, so that it quickly loses its bonding effect and fixing and connecting functions, thereby realizing the separation of glass and battery panels without applying external force, and the separated components have good integrity and can be recycled again.

[0005] In summary, although the existing technology has achieved the separation of photovoltaic module laminates, its efficiency is low and the peeling time is long. In order to solve the above technical problems, we propose a retired photovoltaic module laminate separation device. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a device for separating laminated parts of retired photovoltaic modules, which solves the problems of low efficiency and long stripping time in the prior art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a retired photovoltaic module laminate separation device, including a disassembly table, and also including: hot steel needles, the hot steel needles are arranged in a linear matrix above one side or both sides of the disassembly table; the disassembly table is provided with a Y-axis moving component for driving the hot steel needle to enter between the glass layer and the EVA layer in the direction of the needle axis; the disassembly table is provided with an X-axis moving component for driving the hot steel needle to move in a direction perpendicular to the insertion direction; wherein: the hot steel needle enters between the glass layer and the EVA layer to pyrolyze the EVA layer by internal heating; the hot steel needle moves in a direction perpendicular to the insertion direction for continuous pyrolysis and cutting of the EVA layer.

[0008] Furthermore, the hot steel needle is cylindrical, and a threaded portion is provided on the outer surface of the hot steel needle; it also includes a rotating part, which is used to drive the hot steel needle to rotate so that the hot steel needle enters between the glass layer and the EVA layer in a rotating drilling state; the rotating part includes: a rack column, which is fixed to the upper surface of the disassembly table, and the rack column is located in the axial direction of the hot steel needle; a traveling gear, which is meshed above the rack column, and a transmission structure is provided between the rack column and the hot steel needle, and the transmission structure drives the hot steel needle to rotate through the rotation of the traveling gear.

[0009] Furthermore, the transmission structure includes: a first umbrella wheel, which is coaxial with the traveling gear so that the first umbrella wheel and the traveling gear rotate synchronously; a driven gear, a stabilizing platform is fixedly provided at one end of the hot steel needle away from the center of the disassembly platform, and the driven gear is fixed on the stabilizing platform, and a driving gear is meshed on the driven gear, and a second umbrella wheel coaxial with the driving gear is provided on one side of the driving gear, and the second umbrella wheel is meshed with the first umbrella wheel.

[0010] Furthermore, the hot steel needle includes a main body and a sharp portion arranged on one side of the main body, and the sharp portion is located in the direction in which the hot steel needle continuously pyrolyzes and cuts the EVA layer.

[0011] Furthermore, a stabilizing platform is provided on the upper surface of the disassembly table at a position opposite to the hot steel needle, and a small hole is provided on the stabilizing platform for accommodating the hot steel needle to support the hot steel needle; a guide groove is opened on the upper surface of the disassembly table along the X-axis direction for the stabilizing platform to move.

[0012] Furthermore, it also includes a heating rod, which is located on the upper surface of the glass layer and is vertically opposite to the position of the hot steel needle. The heating rod can soften the EVA opposite to the hot steel needle before the hot steel needle enters between the glass layer and the EVA layer.

[0013] Furthermore, it also includes a material moving component, which includes a lifting frame, a Z-axis telescopic cylinder and a material moving drive structure, a side column is fixedly provided at the bottom of the lifting frame, and the heating rod is installed at the bottom of the side column; a vacuum suction cup is also provided at the bottom of the lifting frame, and the vacuum suction cup includes: an air pipe, the upper end of the air pipe is fixedly connected to the lifting frame, and one side of the air pipe is provided with an air hole for connecting to an air pump; a disk body, the disk body is fixed to the lower end of the air pipe, and a sealing ring is provided at the edge of the lower end surface of the disk body; wherein: the air pump is used to evacuate the disk body so that the disk body can absorb the glass layer; the Z-axis telescopic cylinder is used to drive the disk body to move on the Z axis; the material moving drive structure is used to drive the disk body to move on the X axis.

[0014] Furthermore, the vacuum suction cup further comprises a one-way valve, and the one-way valve is arranged on both sides of the cup body close to the heating rod;

[0015] The air pump is used to blow air into the air pipe to open the one-way valve and blow air outward. The airflow blown out by the one-way valve is used to evenly distribute the heat on the heating rod over the entire glass, so that the hot steel needle can continuously pyrolyze and cut the EVA layer to accelerate the pyrolysis of the EVA.

[0016] Furthermore, the hot steel needle is made of carbon steel, titanium alloy or stainless steel.

[0017] Furthermore, the diameter of the hot steel needle is 3-4 mm.

[0018] The present invention has the following beneficial effects:

[0019] (1) The retired photovoltaic module laminate separation device can use multiple hot steel needles to insert into the interior of the laminate and pyrolyze the EVA layer by internal heating. The direct contact and pyrolysis method can greatly improve the pyrolysis efficiency of EVA and accelerate the removal of the glass. On the other hand, it can also improve the cutting efficiency by cutting simultaneously with multiple hot steel needles, thereby accelerating the stripping process of the entire glass layer.

[0020] (2) The retired photovoltaic module laminate separation device is provided with a rotating part, which allows the spiral hot steel needle to drill into the EVA in a rotating state, thereby reducing the axial pressure on the EVA and avoiding the breakage of the hot steel needle.

[0021] (3) The retired photovoltaic module laminate separation device arranges the hot steel needle into a main part and a sharp part. The hot steel needle composed of the two parts has greater strength, and the probability of the hot steel needle breaking is greatly reduced. In addition, during the hot steel needle cutting stage, the sharp part can provide better shearing force.

[0022] (4) The retired photovoltaic module laminate separation device is equipped with a heating rod. In the initial stage, the heating rod can heat and soften the EVA area corresponding to the hot steel needle in a targeted manner. In the later stage, gas can be blown out of the vacuum suction cup to spread the heat on the heating rod to the entire glass, heating the entire glass and accelerating the thermal decomposition of the EVA inside the laminate.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a first-view overall diagram of the first embodiment of the present invention;

[0025] Figure 2 This is a second viewing angle overall diagram of the first embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the heating rod pressed onto the laminate in the first embodiment of the present invention;

[0027] Figure 4 For the present invention Figure 3 Exploded diagram of

[0028] Figure 5 It is a schematic diagram of a laminated component located on a lifting plate in Embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the installation of a single hot steel needle in the first embodiment of the present invention;

[0030] Figure 7 It is a cross-sectional view of the X-axis nut in the first embodiment of the present invention;

[0031] Figure 8 For the present invention Figure 7 A magnified image of area A;

[0032] Fig. 9 It is a schematic diagram of the structure of the vacuum suction cup of the present invention;

[0033] Fig.10 It is a schematic diagram of the internal structure of the vacuum suction cup of the present invention;

[0034] Fig.11 This is a schematic diagram of the installation of the hot steel needle in the second embodiment of the present invention;

[0035] Fig.12 It is a cross-sectional view of the hot steel needle in the second embodiment of the present invention.

[0036] In the figure, 110, loading platform; 120, disassembling platform; 121, lifting plate; 122, guide groove; 123, stabilizing platform; 130, supporting platform; 140, mounting frame; 200, hot steel needle; 201, main body; 202, sharp part; 210, stabilizing platform; 220, conductive slip ring; 300, X-axis moving assembly; 310, X-axis moving motor; 320, X-axis moving screw rod; 330, X-axis moving nut; 340, X-axis guide rod; 400, Y-axis moving assembly; 410, Y-axis bidirectional screw rod; 4 20. Y-axis guide rod; 430. Y-axis nut; 440. Y-axis drive structure; 500. material transfer assembly; 510. lifting frame; 511. side column; 520. Z-axis telescopic cylinder; 530. material transfer drive structure; 600. heating rod; 700. vacuum suction cup; 710. plate body; 720. air pipe; 730. one-way valve; 800. rotating part; 810. rack column; 820. travel gear; 830. first umbrella wheel; 840. second umbrella wheel; 850. drive gear; 860. driven gear. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] According to the following Figure 1 - Fig.12 The invention describes a retired photovoltaic module laminate separation device provided in an embodiment of the invention.

[0040] Embodiment 1:

[0041] See also Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a retired photovoltaic module laminate separation device, including a loading platform 110 for loading laminates and unloading glass layers, and a disassembly platform 120 for disassembling laminates, which are arranged side by side, and a support platform 130 is assembled under the loading platform 110 and the disassembly platform 120 for supporting the loading platform 110 and the disassembly platform 120 to a certain height.

[0042] Optionally, the loading table is 75-90cm at 110 degrees.

[0043] Preferably, the height of the loading platform 110 is 80 cm.

[0044] Combination Figure 3 - Figure 6 As shown, in order to disassemble the laminate on the disassembly table 120, hot steel needles 200 are provided. The hot steel needles 200 are arranged in a linear matrix above one side or both sides of the disassembly table 120. In this embodiment, two groups of hot steel needles 200 are preferably provided, and a Y-axis moving component 400 for driving the hot steel needles 200 to enter between the glass layer and the EVA layer in the needle axis direction is provided on the disassembly table 120, and an X-axis moving component 300 for driving the hot steel needles 200 to move in a direction perpendicular to the insertion direction is provided on the disassembly table 120.

[0045] The above-mentioned hot steel needle 200 enters between the glass layer and the EVA layer in order to enable the hot steel needle 200 to directly enter the interior of the laminate and pyrolyze the EVA layer by internal heating. The direct contact and pyrolysis method can greatly improve the pyrolysis efficiency of EVA and has a better effect on glass stripping.

[0046] The hot steel needle 200 moves in a direction perpendicular to the insertion direction to continuously pyrolyze and cut the EVA layer. Compared with the single hot knife in the prior art that needs to slowly move through the entire laminate when cutting (slow cutting is to allow the hot knife enough time to pyrolyze the EVA layer), multiple hot steel needles 200 move synchronously to cut and peel off the EVA layer and the glass layer, shortening the overall cutting stroke and thus improving the cutting efficiency.

[0047] Therefore, the retired photovoltaic module laminate separation device provided in the embodiment of the present invention can, on the one hand, use multiple hot steel needles 200 to insert into the interior of the laminate and pyrolyze the EVA layer by internal heating, and the direct contact and pyrolysis method can greatly improve the pyrolysis efficiency of EVA, which has a good effect on glass stripping. On the other hand, it can also improve the cutting efficiency by synchronous cutting of multiple hot steel needles 200, thereby accelerating the stripping process of the entire glass layer.

[0048] Preferably, a lifting plate 121 is provided above the disassembly table 120, and the laminate to be disassembled is placed on the upper surface of the lifting plate 121, and the height of the lifting plate 121 is controlled so that the hot steel needle 200 can be aligned between the glass layer and the EVA layer to ensure that the hot steel needle 200 can enter between the glass layer and the EVA layer.

[0049] Optionally, the lifting plate 121 is lifted and lowered by an electric telescopic rod, a hydraulic cylinder or a pneumatic cylinder.

[0050] Preferably, the two groups of hot steel needles 200 are arranged in the direction of the long side of the laminate. The reason for setting two groups of hot steel needles 200 is that the diameter of the hot steel needles 200 is relatively small, so the shorter the length, the better the stability. Therefore, setting two opposing groups of hot steel needles 200 can shorten the length of the hot steel needles 200 and improve the stability of the hot steel needles 200 compared to a single group of hot steel needles 200 (if a single group of hot steel needles 200 is set, the length of a single hot steel needle 200 needs to be at least equal to the width of the laminate, while if two opposing groups of hot steel needles are set, the length of a single steel needle 200 can be at least half of the width of the laminate).

[0051] Optionally, the hot steel needle 200 is made of carbon steel, titanium alloy or stainless steel, preferably carbon steel, because carbon steel has greater strength and better thermal conductivity.

[0052] Optionally, the diameter of the hot steel needle 200 is 3-4 mm, preferably 4 mm, because the 4 mm hot steel needle 200 has moderate strength and is of moderate thickness to be inserted between the EVA layer and the glass layer.

[0053] Preferably, the end of the hot steel needle 200 that is first inserted between the EVA layer and the glass layer should be pointed to facilitate its insertion.

[0054] In addition, it is necessary to explain the heating principle of the hot steel needle 200 here. In essence, the hot steel needle 200 is used as a resistance wire, which is energized to make it heat up, and positive and negative electrodes are set at the end of the hot steel needle 200 away from the tip, and connected to a power supply device (power supply device such as a battery or AC power) through a wire.

[0055] Combination Figure 1 - Figure 6 As shown, for the hot steel needles 200 arranged on both sides, the following specific implementation schemes of the X-axis moving assembly 300 and the Y-axis moving assembly 400 are given: the Y-axis moving assembly 400 includes a Y-axis bidirectional screw rod 410 rotatably mounted on both sides (Y-axis direction) of the disassembly table 120, a Y-axis nut 430 is symmetrically threadedly connected to the Y-axis bidirectional screw rod 410, and a corresponding Y-axis guide rod 420 is set for the Y-axis nut 430, and a corresponding Y-axis driving structure 440 is set for the Y-axis bidirectional screw rod 410, which includes a Y-axis bidirectional screw rod 410 fixedly connected to the Y-axis bidirectional screw rod 410. Pulleys, belts for driving two sets of pulleys and a motor for driving one of the pulleys to rotate; the X-axis moving screw 320 of the X-axis moving assembly 300 rotates between the two Y-axis nuts 430 on the same side, and the X-axis moving nut 330 is threadedly connected to the X-axis moving screw 320 at a position opposite to the hot steel needle 200, and the X-axis moving nut 330 is equipped with a corresponding X-axis guide rod 340, and the X-axis moving screw 320 is equipped with a corresponding X-axis moving motor 310, and the X-axis moving motor 310 is fixed on the Y-axis nut 430.

[0056] Of course, the above-mentioned X-axis moving assembly 300 and Y-axis moving assembly 400 may also have other implementation schemes, such as providing an X-axis hydraulic cylinder capable of pushing the hot steel needle 200 to move along the X-axis direction on the X-axis; providing a Y-axis hydraulic cylinder capable of pushing the X-axis hydraulic cylinder in the Y-axis direction, and also realizing the movement of the hot steel needle 200 in two directions; of course, the hydraulic cylinder specified here may also be replaced by a pneumatic cylinder.

[0057] Combination Figure 7 and Figure 8 As shown, further, in order to facilitate the initial insertion of the hot steel needle 200 between the EVA layer and the glass layer, the hot steel needle 200 is set to a cylindrical structure with a thread, and is equipped with a corresponding rotating part 800. The rotating part 800 is used to drive the hot steel needle 200 to rotate, so that the hot steel needle 200 can enter between the glass layer and the EVA layer in a rotating drilling state, so that in addition to relying on the thrust of the Y-axis moving component 400 to enter between the glass layer and the EVA layer, the hot steel needle 200 can also rely on its own rotating thread force to enter, making its entry more labor-saving and avoiding the situation where it is broken due to excessive axial thrust.

[0058] like Figure 8 As shown, the rotating member 800 includes a rack column 810, a traveling gear 820 and a transmission structure. The rack column 810 is fixed to the upper surface of the disassembly table 120, and the rack column 810 is located in the axial direction of the hot steel needle 200. The traveling gear 820 is meshed above the rack column 810, and a transmission structure is provided between the rack column 810 and the hot steel needle 200. The transmission structure drives the hot steel needle 200 to rotate through the rotation of the traveling gear 820.

[0059] In this embodiment, when the Y-axis moving component 400 drives the hot steel needle 200 to move, the transmission structure moves accordingly and drives the traveling gear 820 to move. When the traveling gear 820 moves, it can roll on the rack column 810. When it rolls, it reversely drives the transmission structure to drive the hot steel needle 200 to rotate, so as to achieve the rotation state of the hot steel needle 200.

[0060] Continue to refer to Figure 8 Here is a specific scheme of the transmission structure, which includes a first umbrella wheel 830 and a driven gear 860. The first umbrella wheel 830 is coaxial with the traveling gear 820, so that the first umbrella wheel 830 and the traveling gear 820 can synchronously rotate the driven gear 860. A stabilizing platform 210 is fixedly arranged at one end of the hot steel needle 200 away from the center of the disassembly platform 120. The driven gear 860 is fixed on the stabilizing platform 210. A driving gear 850 is meshed on the driven gear 860. A second umbrella wheel 840 coaxial with the driving gear 850 is arranged on one side of the driving gear 850, and the second umbrella wheel 840 is meshed with the first umbrella wheel 830.

[0061] In this embodiment, when the traveling gear 820 rotates, it can drive the first umbrella wheel 830 to rotate, and then the driving gear 850 drives the driven gear 860 to rotate by means of the second umbrella wheel 840, thereby finally realizing the rotation of the stabilizing platform 210. The stabilizing platform 210 is preferably integrally formed with the hot steel needle 200, and its outer surface is preferably provided with a heat insulation layer and an insulating layer.

[0062] In addition, it should be noted that, since the hot steel needle 200 and the stabilizing platform 210 are in a rotating state within a required period of time, a conductive slip ring 220 needs to be assembled on the stabilizing platform 210 to adapt to the wire assembled thereon.

[0063] Combination Figure 3 - Figure 6 As shown, since the hot steel needle 200 has only one end away from the tip as a support position in the initial insertion stage, in order to improve the stability of the hot steel needle 200, a stabilizing platform 123 is provided on the upper surface of the disassembly platform 120 at a position opposite to the hot steel needle 200. The stabilizing platform 123 is provided with a small hole for accommodating the hot steel needle 200 to support the hot steel needle 200. When the hot steel needle 200 moves axially, it is always supported by the stabilizing platform 123 to maintain the stability of the hot steel needle 200.

[0064] However, in fact, the hot steel needle 200 will move along the X-axis during the cutting stage. For this reason, a guide groove 122 for the movement of the stabilizing platform 123 is opened on the upper surface of the disassembly table 120 along the X-axis direction, so that the stabilizing platform 123 can move together with the steel needle 200, so that the stabilizing platform 123 is always in a stable support state.

[0065] like Figure 3 and Figure 4 As shown, in order to further improve the ease of inserting the hot steel needle 200 between the EVA layer and the glass layer and reduce the possibility of the hot steel needle 200 being broken due to excessive axial force applied to the hot steel needle 200, the retired photovoltaic module laminate separation device provided in an embodiment of the present invention is also provided with a heating rod 600. The heating rod 600 is located on the upper surface of the glass layer, and the position of the heating rod 600 is vertically opposite to the position of the hot steel needle 200.

[0066] Therefore, the heating rod 600 of the retired photovoltaic module laminate separation device provided in the embodiment of the present invention can soften the EVA opposite to the hot steel needle 200 before the hot steel needle 200 enters between the glass layer and the EVA layer, so that when the hot steel needle 200 is subjected to a smaller thrust from the Y-axis moving assembly 400, it can also enter the softened EVA, further avoiding the occurrence of breakage of the hot steel needle 200 and extending the life of the hot steel needle 200.

[0067] Combination Figure 1 - Figure 4As shown, in order to facilitate the transfer of the laminated parts on the loading platform 110 to the lifting plate 121, a material moving assembly 500 is also provided, and a mounting frame 140 is fixed on one side of the loading platform 110 and the disassembly platform 120 in the X-axis direction, and the material moving assembly 500 is assembled on the mounting frame 140.

[0068] like Figure 3 and Figure 4 As shown, the material moving assembly 500 mentioned above includes a lifting frame 510, a Z-axis telescopic cylinder 520 and a material moving drive structure 530. A vacuum suction cup 700 is also provided below the lifting frame 510. The vacuum suction cup 700 includes an air pipe 720 and a disk body 710 fixed to the lower end of the air pipe 720. The upper end of the air pipe 720 is fixedly connected to the lifting frame 510, and one side of the air pipe 720 is provided with an air hole for connecting to an air pump. The air pump is used to evacuate the disk body 710 so that the disk body 710 can absorb the glass layer. The material moving drive structure 530 is used to drive the disk body 710 (driving the lifting frame 510 and the components thereon) to move on the X-axis.

[0069] In the initial state, the laminate is located on the upper surface of the loading platform 110, and the lifting frame 510 is located above the loading platform 110. At this time, the Z-axis telescopic cylinder 520 is extended, and the air pump is controlled to evacuate air, so that the vacuum suction cup 700 sucks the glass layer, and the Z-axis telescopic cylinder 520 is shortened to drive the entire laminate to move upward, and then the material moving drive structure 530 drives the lifting frame 510 and the laminate to the top of the disassembly platform 120 together, and then the Z-axis telescopic cylinder 520 is extended to place the laminate on the lifting plate 121, that is, the entire loading process is completed. Conversely, the disassembled glass can also be moved to the loading platform 110.

[0070] Continue to refer to Figure 3 and Figure 4 A side column 511 is fixedly provided below the lifting frame 510, and the heating rod 600 is installed below the side column 511. Preferably, an elastic structure (not shown in the figure) is provided between the heating rod 600 and the side column 511 in the vertical direction, such as a spring or a spring. This is because when the disc 710 absorbs the laminate, it will produce a small deformation. Therefore, after the elastic structure is added, the heating rod 600 can always be in contact with the upper surface of the laminate to heat the laminate.

[0071] like Fig. 9 and Fig.10As shown, in order to improve the efficiency of continuous cutting of the hot steel needle 200 on the X-axis, it is best to ensure that the EVA in all areas can be further softened during the cutting stage (in addition to the softening provided by the temperature of the hot steel needle 200 itself), so a one-way valve 730 is also provided. The one-way valve 730 is provided on both sides of the disk 710 close to the heating rod 600. When the disk 710 is in a negative pressure state, the one-way valve 730 is in a closed state; the above-mentioned air pump can also blow air to the air pipe 720 (in the cutting stage of the hot steel needle 200) to open the one-way valve 730 and blow air outward. The airflow blown out by the one-way valve 730 can evenly distribute the heat on the heating rod 600 on the entire glass, and transfer the heat to the EVA through the entire glass, so that the hot steel needle 200 can continuously pyrolyze and cut the EVA layer to accelerate the pyrolysis of the cutting EVA.

[0072] Therefore, the retired photovoltaic module laminate separation device provided in the embodiment of the present invention can heat the entire glass externally to accelerate the thermal decomposition of the EVA inside the laminate.

[0073] Preferably, the tray body 710 is made of stainless steel.

[0074] In addition, a sealing ring is provided at the edge of the lower end surface of the disc body 710 to improve the adsorption capacity of the disc body 710 .

[0075] When in use (working), the laminate to be disassembled is placed on the loading platform 110, and the lifting frame 510 is located above the loading platform 110. At this time, the Z-axis telescopic cylinder 520 is extended, so that the vacuum suction cup 700 and the heating rod 600 are in contact with the glass layer (the heating rod 600 has already started the heating operation at this time), and the air pump is controlled to evacuate air so that the vacuum suction cup 700 sucks the glass layer, and then the Z-axis telescopic cylinder 520 is shortened to drive the entire laminate to move upward, and then the material moving drive structure 530 drives the lifting frame 510 and the laminate to the top of the disassembly platform 120 together, and then the Z-axis telescopic cylinder 520 is extended to place the laminate on the lifting plate 121, that is, the entire loading process is completed, and then the height of the lifting plate 121 is adjusted to make the height of the hot steel needle 200 the same as the height of the EVA layer. At this time, the vacuum suction cup 700 plays a role of limiting the laminate, so that it is stably located on the lifting plate 121.

[0076] Then, the Y-axis moving assembly 400 is driven to gradually approach and insert the hot steel needle 200 between the EVA layer and the glass layer. At the same time, the running gear 820 moves and can roll on the rack column 810. When rolling, the reverse driving transmission structure drives the hot steel needle 200 to rotate, so that the hot steel needle 200 rotates and drills into the space between the EVA layer and the glass layer (the area heated by the heating rod 600). Wait for the hot steel needle 200 to be heated inside the laminate (the waiting time is 5s-7s, and the temperature of the hot steel needle 200 is 200℃-40 0℃), so that the EVA inside it is quickly pyrolyzed (in addition, after the hot steel needle 200 is completely inserted into the EVA, the air pump changes the air pipe 720 to blow air, so that the one-way valve 730 opens and blows air outward, and the air flow blown out by the one-way valve 730 can evenly distribute the heat on the heating rod 600 to the entire glass, and conduct the heat to the EVA through the entire glass, thereby improving the pyrolysis efficiency of the EVA layer), the X-axis moving component 300 drives the hot steel needle 200 to move on the X-axis and thermally cuts the EVA until the glass is completely peeled off.

[0077] The air pump is controlled to suck air again, so that the vacuum suction cup 700 can transport the peeled glass to the loading platform 110; in fact, a conveyor belt can also be set on the lifting plate 121 to conveniently transport the remaining laminated parts out of the peeled glass.

[0078] Embodiment 2:

[0079] Combination Fig.11 and Fig.12 As shown, the difference between this embodiment and the first embodiment is that this embodiment has no rotating part 800, and the hot steel needle 200 is directly inserted between the EVA layer and the glass layer. The hot steel needle 200 includes a main body 201 and a sharp portion 202 arranged on one side of the main body 201, and the sharp portion 202 is located in the direction in which the hot steel needle 200 continuously pyrolyzes and cuts the EVA layer, so that when the hot steel needle 200 cuts along the X-axis, the sharp portion 202 thereon can play a better cutting role.

[0080] It is worth noting that the diameter of the main body 201 is 3-4 mm, preferably 4 mm.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0082] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A decommissioned photovoltaic module laminate separation device, comprising a disassembly station (120), characterized in that: Also includes: Hot steel needles (200), the hot steel needles (200) being arranged in a linear matrix above one side or both sides of the disassembly table (120); The disassembly table (120) is provided with a Y-axis moving component (400) for driving the hot steel needle (200) to enter between the glass layer and the EVA layer in the direction of the needle axis; The disassembly table (120) is provided with an X-axis moving assembly (300) for driving the hot steel needle (200) to move in a direction perpendicular to the insertion direction; in: The hot steel needle (200) enters between the glass layer and the EVA layer to pyrolyze the EVA layer in an internal heating manner; The hot steel needle (200) moves in a direction perpendicular to the insertion direction to continuously pyrolyze and cut the EVA layer; The hot steel needle (200) is cylindrical, and a threaded portion is provided on the outer surface of the hot steel needle (200); It also includes a rotating member (800), wherein the rotating member (800) is used to drive the hot steel needle (200) to rotate, so that the hot steel needle (200) enters between the glass layer and the EVA layer in a rotating drilling state; The rotating member (800) comprises: A rack column (810), wherein the rack column (810) is fixed to the upper surface of the disassembly platform (120), and the rack column (810) is located in the axial direction of the hot steel needle (200); A traveling gear (820), wherein the traveling gear (820) is meshed with the rack column (810), and a transmission structure is provided between the rack column (810) and the hot steel needle (200), wherein the transmission structure drives the hot steel needle (200) to rotate through the rotation of the traveling gear (820); Two groups of hot steel needles (200) are provided, the two groups of hot steel needles (200) are arranged in the direction of the long side of the laminate, and the length of a single steel needle (200) is at least half the width of the laminate; A stabilizing platform (123) is provided on the upper surface of the disassembling platform (120) at a position opposite to the hot steel needle (200), and a small hole for accommodating the hot steel needle (200) is provided on the stabilizing platform (123) so as to support the hot steel needle (200); A guide groove (122) for the stabilizing platform (123) to move is provided on the upper surface of the disassembling platform (120) along the X-axis direction; It also includes a heating rod (600), the heating rod (600) is located on the upper surface of the glass layer, and the position of the heating rod (600) is vertically opposite to the position of the hot steel needle (200), and the heating rod (600) can soften the EVA opposite to the hot steel needle (200) before the hot steel needle (200) enters between the glass layer and the EVA layer; an elastic structure is arranged between the heating rod (600) and the side column (511) in the vertical direction; It also includes a material moving assembly (500), the material moving assembly (500) including a lifting frame (510), a Z-axis telescopic cylinder (520) and a material moving drive structure (530), a side column (511) being fixedly arranged below the lifting frame (510), and the heating rod (600) being installed below the side column (511).

2. A retired photovoltaic module laminate separation device according to claim 1, characterized in that: The transmission structure comprises: A first umbrella wheel (830), wherein the first umbrella wheel (830) is coaxial with the traveling gear (820), so that the first umbrella wheel (830) and the traveling gear (820) rotate synchronously; A driven gear (860), a stabilizing platform (210) is fixedly provided at one end of the hot steel needle (200) away from the center of the disassembly platform (120), the driven gear (860) is fixed on the stabilizing platform (210), a driving gear (850) is meshed on the driven gear (860), a second umbrella wheel (840) coaxial with the driving gear (850) is provided on one side of the driving gear (850), and the second umbrella wheel (840) is meshed with the first umbrella wheel (830).

3. The decommissioned photovoltaic module laminate separation device according to claim 1, characterized in that: The hot steel needle (200) comprises a main body (201) and a sharp portion (202) provided on one side of the main body (201), wherein the sharp portion (202) is located in the direction in which the hot steel needle (200) continuously pyrolyzes and cuts the EVA layer.

4. The device for separating laminated parts of retired photovoltaic modules according to claim 1, characterized in that: A vacuum suction cup (700) is also provided below the lifting frame (510), and the vacuum suction cup (700) comprises: An air pipe (720), the upper end of the air pipe (720) being fixedly connected to the lifting frame (510), and one side of the air pipe (720) being provided with an air hole for connecting to an air pump; A disk body (710), wherein the disk body (710) is fixed to the lower end of the air pipe (720), and a sealing ring is provided at the edge of the lower end surface of the disk body (710); in: The air pump is used to evacuate air from the disk body (710) so that the disk body (710) can absorb the glass layer; The Z-axis telescopic cylinder (520) is used to drive the disk (710) to move on the Z-axis; The material transfer driving structure (530) is used to drive the plate (710) to move on the X-axis; The vacuum suction cup (700) further comprises a one-way valve (730), wherein the one-way valve (730) is arranged on two sides of the cup body (710) close to the heating rod (600); The air pump is used to blow air into the air pipe (720) so that the one-way valve (730) opens and blows air outwards. The airflow blown out by the one-way valve (730) is used to evenly distribute the heat on the heating rod (600) over the entire glass, so that the hot steel needle (200) continuously pyrolyzes and accelerates the pyrolysis of the EVA when cutting the EVA layer.

5. The device for separating laminated parts of retired photovoltaic modules according to claim 1, characterized in that: The hot steel needle (200) is made of carbon steel, titanium alloy or stainless steel.

6. The device for separating laminated parts of retired photovoltaic modules according to claim 1, characterized in that: The diameter of the hot steel needle (200) is 3-4 mm.

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